Go Back  RCU Forums > RC Cars, Buggies, Trucks, Tanks and more > RC Giant Scale Cars
Reload this Page >

Homemade large scale buggy (1/5)

Notices
RC Giant Scale Cars For all those who love driving large scale rc cars share your projects or ask questions here.

Homemade large scale buggy (1/5)

Old 11-03-2011, 02:14 PM
  #1  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default Homemade large scale buggy (1/5)

Hello!

My name is Sinisa and I am writing from Croatia. This is my first post on rcuniverse forum. Before year or so I decided to build my own RC something (at that time it wasn't matter if it would be car, buggy, truck, airplane or something else). I am an electronics technician and familiar with hand and power tools, but without any experience in RC before this project.
After days and hours of googling this forum was discovered .
After reading sticky about homemade projects I made my choice: It will be 1/5 or 1/6 BUGGY
After one year car is finally in working and good driving condition. Many, many problems needed to be solved during production period, and much more time and much more money was spent than planned.
It was worth every single minute and every single buck!!!
Thank you all for being so constructive in posting and for posting lot of pictures.
Special thanks to sam123, Dirty Vinylpusher, Lars from Norway and many, many others which were active on homemade threads.

And here is some photos and information about my project.
I have many pictures from production (details, phases, replaced parts,...) and will post it soon or on your request.


Length: 740mm
Width: 416mm
Height: 278mm
Wheelbase: 515mm
Front track: 288mm
Rear track: 333mm
Weight: 14.4kg with fuel
Engine: 40ccm 2,5kW
Battery power: 6V NiMh custom pack
Gear: 11:19, 6:19
Brakes: 98mm disc
Servos: 10kg/cm



Greetings from Croatia!

Attached Thumbnails Click image for larger version

Name:	Qn38493.jpg
Views:	2663
Size:	71.8 KB
ID:	1681956   Click image for larger version

Name:	Tp46459.jpg
Views:	1894
Size:	73.0 KB
ID:	1681957   Click image for larger version

Name:	Lq37690.jpg
Views:	1494
Size:	64.7 KB
ID:	1681958   Click image for larger version

Name:	Yr47662.jpg
Views:	1861
Size:	93.6 KB
ID:	1681959   Click image for larger version

Name:	Vg53455.jpg
Views:	1757
Size:	166.6 KB
ID:	1681960  
Old 11-03-2011, 03:37 PM
  #2  
Lars from Norway
 
Lars from Norway's Avatar
 
Join Date: Jun 2008
Location: Norheimsund, NORWAY
Posts: 3,158
Likes: 0
Received 1 Like on 1 Post
Default RE: Homemade large scale buggy (1/5)

Congratulations on your first build! It looks very nice and well built. Nice to see that you have benefitted from the home made-sticky thread too
Old 11-20-2011, 02:43 AM
  #3  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Here are some photos of parts and assemblies.
This project had many changes because of bad design or miscalculation so I will try to point to that stuff.
That may help someone to not make same mistake.
That doesn't mean that i will be posting only bad stuff



First idea for transmission was system with two belts. That was bad idea!! Engine has just to many torque.
Tiny XL belt didn't survive first test drive



Very soon i had to replace it with chains and sprockets



First set of wheels were from ebay for some rock crawler. They couldn't carry weight so I installed a valve and filled it with compressed air.
That was bad choice because at that time buggy was over 10kg weight and was very unstable with those tires.




After couple of test drives realized that it needs bigger rear wheels, wider rear track and that I need to get rid of inflated tires.
Those small rear wheels were poking me in eyes. I bought some real tires for rear and did something that bring amazing increase in stability:
took a visit to local furniture manufacturer and got piece of hardest foam that he had. I made inserts tvice as big as originals and somehow stuffed it into tires.
Result was amazing! Wheel is enough firm to carry vehicles weight and still soft to deform as needed.
I also changed rear suspension, increased rear end ground clearence and changed driveshafts.
First try was to increase length of driveshafts by cutting them and put into tube adapters. Bad idea.
To much vibrations and too much torque and weld couldn't hold.




Old 11-20-2011, 03:18 AM
  #4  
sam123
Senior Member
My Feedback: (1)
 
Join Date: Feb 2005
Location: Melbourne, AUSTRALIA
Posts: 506
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Nice work mate! It looks very neat and well made. Thanks for sharing
Old 11-20-2011, 04:27 AM
  #5  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Thank you and others to share your stuff. You gave me inpiration to build this one. Hope that some of my stuff will help you to make better models just as yours helped me.

Next I will post photos of details and then will continue to write about mistakes and changes.
I had a HUUUUGE change this days but have to post older material first ))

Old 11-20-2011, 05:43 AM
  #6  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Ok, here are some details. Some of them are changed but i will write about these.

Front end - first design

This setup is driving but i am not satisfied with it. Suspension is too narow, tower is too weak, bump steer is very high.
Bump steer is very high because my arms forms high angle and turnbuckle joints couldn't performe it. I had to raise turnbuckle joint on one side to lower angle. Result is more than 3mm difference in length when suspension is down.

Those blocks could be better built, but at that time I didn't have a lathe
Anyway, here are photos, maybe someone coul'd learn on my mistakes


Attached Thumbnails Click image for larger version

Name:	Lj23711.jpg
Views:	693
Size:	130.9 KB
ID:	1688880   Click image for larger version

Name:	Om34409.jpg
Views:	650
Size:	95.2 KB
ID:	1688881   Click image for larger version

Name:	Rm37820.jpg
Views:	492
Size:	74.8 KB
ID:	1688882   Click image for larger version

Name:	Ot48372.jpg
Views:	471
Size:	93.7 KB
ID:	1688883   Click image for larger version

Name:	Hb80066.jpg
Views:	455
Size:	91.4 KB
ID:	1688884   Click image for larger version

Name:	Bm75432.jpg
Views:	497
Size:	70.2 KB
ID:	1688885   Click image for larger version

Name:	Gx30704.jpg
Views:	432
Size:	73.3 KB
ID:	1688886   Click image for larger version

Name:	Ik90552.jpg
Views:	405
Size:	75.8 KB
ID:	1688887  

Click image for larger version

Name:	Mk27080.jpg
Views:	615
Size:	123.8 KB
ID:	1688888   Click image for larger version

Name:	Zu64143.jpg
Views:	605
Size:	126.2 KB
ID:	1688889  
Old 11-21-2011, 12:35 PM
  #7  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Rear end - first design



Attached Thumbnails Click image for larger version

Name:	Ig13200.jpg
Views:	369
Size:	104.0 KB
ID:	1689506   Click image for larger version

Name:	Pk30615.jpg
Views:	442
Size:	133.7 KB
ID:	1689507   Click image for larger version

Name:	Ej14705.jpg
Views:	427
Size:	56.9 KB
ID:	1689508   Click image for larger version

Name:	Vp39771.jpg
Views:	440
Size:	56.6 KB
ID:	1689509   Click image for larger version

Name:	Rc41951.jpg
Views:	426
Size:	66.4 KB
ID:	1689510   Click image for larger version

Name:	Zq96709.jpg
Views:	459
Size:	78.0 KB
ID:	1689511   Click image for larger version

Name:	Wy50785.jpg
Views:	441
Size:	136.2 KB
ID:	1689512   Click image for larger version

Name:	Jh26697.jpg
Views:	450
Size:	118.0 KB
ID:	1689513  

Old 11-21-2011, 02:35 PM
  #8  
Lars from Norway
 
Lars from Norway's Avatar
 
Join Date: Jun 2008
Location: Norheimsund, NORWAY
Posts: 3,158
Likes: 0
Received 1 Like on 1 Post
Default RE: Homemade large scale buggy (1/5)

Nice of you to post some pics of the build up (and some mistakes aswell) from the start! It is the mistakes that makes both you and the car better
Old 11-21-2011, 05:11 PM
  #9  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Center shaft with brakes

Disc is a 98mm cut from 115mm disc for cutting tiles with angle grinder
Pads are for some dirt bike (ebay).
Caliper is made of steel tube.
Pulleys are now replaced with sprockets and waiting for some smaller, maybe electrical project.

This brake is very well performing. 10kg/cm servo is pulling about 3cm long lever with just enough power not to block wheels at higher speeds, but stopping almost 15kg very fast (with clutch still engaged
Due to large disc, shaft is high above chassis and I had to support carriers from both sides (support is not on photos). Realized that after second crash - whole aluminum assembly bents forward about 5-10 degrees. Next time I will use smaller disc and maybe stronger servo or even hydraulics
More about that crash in section "bumper" soon

Attached Thumbnails Click image for larger version

Name:	Mk26488.jpg
Views:	590
Size:	100.3 KB
ID:	1689610   Click image for larger version

Name:	Pk30163.jpg
Views:	488
Size:	96.2 KB
ID:	1689611   Click image for larger version

Name:	Lq36951.jpg
Views:	676
Size:	86.9 KB
ID:	1689612   Click image for larger version

Name:	Rl25808.jpg
Views:	644
Size:	85.1 KB
ID:	1689613   Click image for larger version

Name:	Ny26519.jpg
Views:	578
Size:	110.4 KB
ID:	1689614   Click image for larger version

Name:	Fv26132.jpg
Views:	711
Size:	77.1 KB
ID:	1689615   Click image for larger version

Name:	Mo14387.jpg
Views:	658
Size:	118.7 KB
ID:	1689616  
Old 11-26-2011, 03:20 AM
  #10  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Bumper

At first there was no plan to build a bumper. Very bad idea! Before this build I never drove this big, heavy and relatively fast rc vehicle. I underestimated force of almost 15kg heavy buggy hitting a sidewalk, taking a flip or crashing into fixed obstacle.
Realized that after very first test drive. Result was broken brand new servo. Instead of installing servo saver I decided to build a bumper to protect both front wheels and servo.

Another big mistake was to make a bumper from aluminum tubes. This one was ruined after very light touck with a kurb.


I made second version from aluminum again, not from tubes, but from profile. This version was much stronger, but still not strong enough. Aluminum plate on two springs was very good for light contact. At that time I had problems with radio system and several lighter crashes deformed it very badly (mostly on thin wheel protecting part)


At this moment I decided to build next one from steel. Heavy, but who cares, buggy will be protected during all testing and debugging stuff.
It was made from steel tubes and had an extension to chassis


It was very, very heavy, but very, very good. It survived one severe crash when my friend (first time driving ) turned into wrong way and in panic got full throttle instead of giving a brake He crashed into parked car with almost full speed! Luckily he bumped into wheel and there was almost no visible damage on car.


Old 11-26-2011, 03:51 AM
  #11  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Bumper - need a new design - please help!

Last (third) version of bumper is performing well, but is to much heavy so I decided to replace it with more compact version.
This time I need your advice, please help!

Idea is to protect vehicle from front crash and partialy protect wheels from bumping with wheels in turning position. I will also install a servo saver.
Bumper with springs seems to be a good choice because it can take a lot of energy without transfering it to chassis or deforming. I got some pretty hard springs used in real cars for valves. This time springs have to blend into bumpers desing. I want to use steel or aluminum (or combination) but not have tools to weld aluminum.
Build it from two parts (like in 2nd design) or to make it from one movable part? If one, how to attach it to chassis?

I don't want to wrap bumper around wheels this time. How much wheel area to cover? Curve it ot leave flat? At what height to install it?

If anyone have an idea please reply!
Thank you!
Old 11-29-2011, 01:12 AM
  #12  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Pipe and silencer

First idea was to build a simple two stage tuned pipe. I got several tuned pipe calculators from internet and played for a while. In every result, overal length of pipe should be more than one meter with second cone longer than 30cm. Since it was to big to fit without complicated bendings I decided to shoot in blind. I don't have equipment to measure is it really working so I decided to compare it with any other muffler. Some stock muffler from chainsaw was nearby and comparison result was very good. There was noticable difference in power and sound. Sound was very loud, but pleasant. Pipe was crying for some sort of silencer so I decided to build one.
Made it from aluminum because it had to be light due to high vibrations. In lack of equipment to join aluminum parts I glued it with epoxy and baked in owen for two hours. Result is amazing. Sound and appearance are very good and there is no noticable power loss.




Attached Thumbnails Click image for larger version

Name:	Rp44665.jpg
Views:	344
Size:	128.4 KB
ID:	1692851   Click image for larger version

Name:	Lg16036.jpg
Views:	323
Size:	120.5 KB
ID:	1692852   Click image for larger version

Name:	Ua70665.jpg
Views:	348
Size:	88.6 KB
ID:	1692853   Click image for larger version

Name:	Ys50527.jpg
Views:	499
Size:	105.2 KB
ID:	1692854   Click image for larger version

Name:	Nk27799.jpg
Views:	399
Size:	201.5 KB
ID:	1692855  
Old 12-13-2011, 02:44 PM
  #13  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

It's time for some updates!

I was almost satisfied with last build, but there was few thing that was screaming "change me, change me!"
Main problem was high center of gravity due to heavy tank on top of vehicle (I could not find an affordable carb with membranes so now tank must be positioned above) and relatively high positioned engine. Sometimes it was to easy to flip buggy in fast corner.
Also aluminum parts in bumper and in frame was a bad idea.

I made some serious changes and can't wait to drive!
Here are list of changes made:

Engine is now 3cm lower, mounted directly to chassis (I had to drill a large hole in chassis because carb is very low and rewiring was needed).
Fuel tank is 2cm lower, now mounted in two points. I got rid of heavy big clamp and add an element to reinforce wing top ends. Drain hole is now much bigger and put in angled position because gravity was not my friend
I hope that this two things would increase stability.


Aluminum frame is completely replaced with steel ones. Front tower and arms are now from steel too and welded directly to steel frame. Suprisingly it is not much heavier than aluminum one because alu front end was made from many pieces bolted together and old frame had steel bars in some of critical tubes.






Front track is now 315mm, just a bit narower than rear one. Arms are much longer and with no play in bushings ( I have a lathe now )
Wheelbase is increased to 535mm.







Shock tower is narrow now and top end is more than 3cm lower. That means that it is not exposed to damage during flipping.
I had to move and shorten headlights for same reason.




Steering system is completely new and I made a steel servo saver





I installed second pair of bearings to front blocks and made a beadlocks from steel plates (ugly, but goooood)



There is also new air filter for which I had to build adapter to dislocate filter from carb (no room to place it behind carb)






After many problems with proper power supply I decided to switch to LiPo Good call!
This is 2cell 3000mAh 15C battery from ebay and is performing very good. Unlike NimH ther is no voltage drop on full demand (both servos under load, headlights and brake lights on)
I know that 4amps isn't much load for Lipo but Nimh couldn't perform it.



I found this oil can when was digging my scrap. It is probably older than me but it works!



This was huge rebuild and I cant wait do try to drive! Still need to rebuild pipe (egine is lower now and there is no room for it under chain anymore) and design a new bumper.
I will take some photos of whole vehicle soon.


Hope you like it. Feel free to reply with or without questions or ideas.

Old 12-13-2011, 05:11 PM
  #14  
willclark77
My Feedback: (2)
 
willclark77's Avatar
 
Join Date: Apr 2009
Location: Hattiesburg, MS
Posts: 356
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)



Very impressive build!  I am enjoying seeing it progress and ready to see video of it in action!  Good luck and keep up the good work.

Old 12-18-2011, 02:53 PM
  #15  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Here is new bumper. I decided to give up design with springs due to lack of inspiration. Skid plate (not mounted yet) will be playing that role.
I was not inspired at all during design of this (4rd generation) bumper and it was very time consuming Much more than build it actualy. Call for help several posts ago didn't get any results. Hope there are no big design mistakes in this update.
It is made of 15mm steel pipe with 1,25mm wall. That makes it just over 600g.










Here is rerouted pipe (chamber is moved to front, flange is closer to chassis).
Weight is 600g.




Parts aren't mounted yet and I need to make and mount a skid plate


Old 12-27-2011, 04:56 AM
  #16  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Bumper and pipe are finally mounted so here are pictures of "new" buggy with all updates.
I'll wait several days for better weather to test it and to make some video.






Old 12-29-2011, 08:10 AM
  #17  
quietnas1
 
Join Date: Dec 2007
Location: MIAMI, FL
Posts: 2,309
Likes: 0
Received 1 Like on 1 Post
Default RE: Homemade large scale buggy (1/5)

Wow that thing is awesome. I wish I had the tools to build my own 1/5 scale but I live in an apartment. I love it good work and craftsmanship man.
Old 01-02-2012, 09:26 AM
  #18  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

I'm glad you like it! I am lucky to have plenty of space and friendly neighbours. Maybe you will manage some extra space so your build could be next. Looking forward to it.

Here are more photos of last update...still no video


Attached Thumbnails Click image for larger version

Name:	Yw68317.jpg
Views:	373
Size:	72.7 KB
ID:	1708539   Click image for larger version

Name:	Zu65065.jpg
Views:	388
Size:	72.2 KB
ID:	1708540   Click image for larger version

Name:	Gl20849.jpg
Views:	366
Size:	66.5 KB
ID:	1708541   Click image for larger version

Name:	Rl24949.jpg
Views:	442
Size:	111.7 KB
ID:	1708542   Click image for larger version

Name:	Al70529.jpg
Views:	433
Size:	106.8 KB
ID:	1708543   Click image for larger version

Name:	Iz37019.jpg
Views:	511
Size:	104.4 KB
ID:	1708544   Click image for larger version

Name:	Ln10244.jpg
Views:	425
Size:	101.3 KB
ID:	1708545   Click image for larger version

Name:	Ca92718.jpg
Views:	623
Size:	84.4 KB
ID:	1708546  

Old 01-03-2012, 06:14 PM
  #19  
willclark77
My Feedback: (2)
 
willclark77's Avatar
 
Join Date: Apr 2009
Location: Hattiesburg, MS
Posts: 356
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

Good job!  I'm looking forward to video.
Old 01-08-2012, 08:53 AM
  #20  
flashskate13
Junior Member
 
Join Date: Jan 2012
Location: , UNITED KINGDOM
Posts: 22
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

love it this is what im hoping to build what diff did you use?
Old 01-09-2012, 01:08 AM
  #21  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

ORIGINAL: flashskate13
love it this is what im hoping to build what diff did you use?
It is front/rear diff from RC8 . Sprocket is welded onto existing gear and It is filled with automatic transmission fluid.
Ihad to weaken it by mounting bearings much wider than original, but it still works very well!!!

Old 01-09-2012, 09:26 AM
  #22  
flashskate13
Junior Member
 
Join Date: Jan 2012
Location: , UNITED KINGDOM
Posts: 22
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

thanks think im going to use the rc8 diff and extend the cups out and maybe muck around on building a diff later on

another question how much you think it ruffly weights and what shocks did you use.

is there a video of it running yet

cheers ricky
Old 01-11-2012, 01:00 PM
  #23  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

It weights 13.5kg without fuel. Unexpected, but it is lighter than before last update

Shocks are generic 130mm, from ebay, but modified! I had to replace springs with much harder one and pistons were too weak to handle high pressure.
At first, there were three big holes on 13mm plastic piston. Shoch reaction was very weak and chassis could hit to ground on bumpy road or on every little jump. I didn't want to change oil type so I closed all three holes to get higher reaction to high pressure. Reaction was as expected, but after I dropped car from 20-30cm several times pistons broke.

Now it have diy aluminum pistons without holes. It can absorb high impact, but return is very slow. I'l try it soon and update info.

Still no video...sorry
Old 01-11-2012, 04:03 PM
  #24  
tapkoote
Senior Member
 
Join Date: Aug 2010
Location: Seattle, WA
Posts: 415
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

sinisa
do you have pictures of that motor out of the car
What is it out of?
great build!
tap
Old 01-13-2012, 03:36 AM
  #25  
mikula_os
Member
Thread Starter
 
mikula_os's Avatar
 
Join Date: Apr 2011
Location: Osijek, CROATIA (HRVATSKA)
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Homemade large scale buggy (1/5)

That engine is common for pocket bike (cag). I bought it new from China on ebay for under 100$ with shipping to Croatia. There are plenty of pictures available online, just google pocket bike engine photo.
Just one hint: there are two versions of this engine. One is 40cc and other is 49cc. Both are advertised as 49cc, and first one also as 47cc . Difference may be seen if you look close to cooling fins on cylinders. On 49cc they don't go all way around cylinder, but brake on corners.

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.